Function register

packages/firebase-messaging-core/index.android.ts:97–117

(args: any)

const _permissionQueue: { resolve: Function; reject: Function }[] = [];

function register(args: any) {
	if (!lastActivity) {
		// Some activities do not implement activity result API
		if (args.activity.registerForActivityResult) {
			lastActivity = new WeakRef(args.activity);
			requestPermissionLauncher = args.activity.registerForActivityResult(
				new androidx.activity.result.contract.ActivityResultContracts.RequestPermission(),
				new androidx.activity.result.ActivityResultCallback({
					onActivityResult(isGranted: boolean) {
						_permissionQueue.forEach((callback) => {
							callback.resolve(isGranted ? 0 : 1);
						});
						_permissionQueue.splice(0);
					},
				})
			);
		} else {
			Application.android.once('activityCreated', register);
		}
	}
}

Application.android.on('activityResumed', (args) => {
	MessagingCore._inForeground = true;